[FIR] Fix missing receiver type if anonymous function without label

compiler/testData/diagnostics/testsWithStdLib/resolve/hidesMembers.fir.kt

@@ -36,9 +36,9 @@ fun A.forEach() = ""
 fun A.forEach(s: String) {}
 
 fun test(a: A) {
-    a.forEach() checkType { <!UNRESOLVED_REFERENCE!>_<!><String>() }
+    a.forEach() checkType { _<String>() }
 
-    a.forEach(1) checkType { <!UNRESOLVED_REFERENCE!>_<!><Int>() }
+    a.forEach(1) checkType { _<Int>() }
 
     a.forEach("")
 

compiler/testData/diagnostics/testsWithStdLib/resolve/hidesMembers2.fir.kt

@@ -17,7 +17,7 @@ class B {
     fun A.forEach() = this@B
 
     fun test(a: A) {
-        a.forEach() checkType { <!INAPPLICABLE_CANDIDATE!>_<!><A>() } // todo
+        a.forEach() checkType { _<A>() } // todo
 
         with(a) {
             forEach() checkType { _<A>() } // todo
@@ -34,7 +34,7 @@ fun test2(a: A) {
     @kotlin.internal.HidesMembers
     fun A.forEach(i: Int) = ""
 
-    a.forEach() checkType { <!UNRESOLVED_REFERENCE!>_<!><String>() }
+    a.forEach() checkType { <!INAPPLICABLE_CANDIDATE!>_<!><String>() }
     a.forEach(1)
 
     with(a) {

compiler/testData/diagnostics/testsWithStdLib/resolve/samAgainstFunctionalType.fir.kt

@@ -25,6 +25,6 @@ public class StaticOverrides {
 
 fun test() {
     StaticOverrides.A.<!AMBIGUITY!>foo<!> {} <!INAPPLICABLE_CANDIDATE!>checkType<!> { <!UNRESOLVED_REFERENCE!>_<!><Boolean>() }
-    StaticOverrides.B.foo {} checkType { <!UNRESOLVED_REFERENCE!>_<!><String>() }
-    StaticOverrides.C.foo {} checkType { <!UNRESOLVED_REFERENCE!>_<!><Boolean>() }
+    StaticOverrides.B.foo {} checkType { _<String>() }
+    StaticOverrides.C.foo {} checkType { <!INAPPLICABLE_CANDIDATE!>_<!><Boolean>() }
 }